import {
  forwardRef,
  useEffect,
  useImperativeHandle,
  useMemo,
  useState,
} from "react";
import repairService from "@/api/services/eam/repairService";
import { TableToolbar } from "@/components/grid/TableToolbar";
import { Button, Input, Modal, UploadFile, UploadProps } from "antd";
import Table, { type ColumnsType } from "antd/es/table";
import { toast } from "sonner";
import type { EamEquipmentRepairAttachment } from "./entity";
import { Upload } from "@/components/upload";

interface EamEquipmentRepairAttachmentProps {
  parentId?: React.Key;
  isView?: boolean; // 是否只读
}

export interface EamEquipmentRepairAttachmentHandles {
  getAddList: () => EamEquipmentRepairAttachment[];
  getUpdateList: () => EamEquipmentRepairAttachment[];
  getDeleteIds: () => React.Key[];
}

const EamEquipmentRepairAttachmentPage = forwardRef<
  EamEquipmentRepairAttachmentHandles,
  EamEquipmentRepairAttachmentProps
>(({ parentId, isView }, ref) => {
  const [loading, setLoading] = useState(false);
  const [list, setList] = useState<EamEquipmentRepairAttachment[]>([]);
  const [selectedRowKeys, setSelectedRowKeys] = useState<React.Key[]>([]);
  // 添加一个状态来跟踪临时ID
  const [tempIds, setTempIds] = useState<React.Key[]>([]);
  const [addList, setAddList] = useState<EamEquipmentRepairAttachment[]>([]);
  const [updateList, setUpdateList] = useState<EamEquipmentRepairAttachment[]>(
    []
  );
  const [deleteIds, setDeleteIds] = useState<React.Key[]>([]);

  // 上传相关状态
  const [uploadModalVisible, setUploadModalVisible] = useState(false);
  const [fileList, setFileList] = useState<UploadFile[]>([]);
  const [uploading, setUploading] = useState(false);

  useImperativeHandle(
    ref,
    () => ({
      getAddList: () => addList,
      getUpdateList: () => updateList,
      getDeleteIds: () => deleteIds,
    }),
    [addList, updateList, deleteIds]
  );

  useEffect(() => {
    const newAddList = list.filter(
      (item) => item.id && tempIds.includes(item.id)
    );
    setAddList(newAddList);
    const updateList = list.filter(
      (item) => item.id && !tempIds.includes(item.id)
    );
    setUpdateList(updateList);
  }, [list]);

  const [tableSize, setTableSize] = useState<"large" | "middle" | "small">(
    "middle"
  );

  //动态设置表格高度
  const [tableScrollY, setTableScrollY] = useState(0);
  const PAGE_OFFSET_HEIGHT = 403;
  const updateTableHeight = () => {
    const newHeight = window.innerHeight - PAGE_OFFSET_HEIGHT;
    setTableScrollY(newHeight > 200 ? newHeight : 200); // 保证最小高度
  };

  // biome-ignore lint/correctness/useExhaustiveDependencies: <explanation>
  useEffect(() => {
    updateTableHeight(); // 初始化
    window.addEventListener("resize", updateTableHeight);
    return () => window.removeEventListener("resize", updateTableHeight);
  }, []);

  //表格列定义
  const columns: ColumnsType<EamEquipmentRepairAttachment> = [
    {
      title: "文件名",
      width: 120,
      key: "fileName",
      dataIndex: "fileName",
    },
    {
      title: "文件类型",
      width: 120,
      key: "fileType",
      dataIndex: "fileType",
    },
    {
      title: "文件大小",
      width: 120,
      key: "fileSize",
      dataIndex: "fileSize",
    },
    {
      title: "备注",
      width: 120,
      key: "remark",
      dataIndex: "remark",
      render: (text, record) => (
        <Input
          value={text}
          onChange={(e) =>
            handleFieldChange(record.id, "remark", e.target.value)
          }
          disabled={isView}
        />
      ),
    },
  ];

  const [selectedValues, setSelectedValues] = useState<string[]>(() =>
    columns
      .filter((col) => col.key !== "operation")
      .map((col) => (col.key ? String(col.key) : ""))
  );

  // 处理字段变更
  const handleFieldChange = (id: string, field: string, value: any) => {
    let inputValue: any = null;
    // 如果是checkbox的值，将布尔值转换为数字值（true为1，false为0）
    if (typeof value === "boolean") {
      inputValue = value ? 1 : 0;
    } else if (value instanceof Date) {
      // 处理日期格式
      inputValue = dayjs(value).format("YYYY-MM-DD");
    } else {
      inputValue = value;
    }

    setList((prevData) =>
      prevData.map((item) =>
        item.id === id ? { ...item, [field]: inputValue } : item
      )
    );
  };

  // biome-ignore lint/correctness/useExhaustiveDependencies: <explanation>
  const filteredColumns = useMemo(() => {
    return [
      ...columns.filter(
        (col) =>
          selectedValues.includes(String(col.key)) || col.key === "operation"
      ),
    ].sort((a, b) => {
      const originalIndex = columns.findIndex((c) => c.key === a.key);
      const targetIndex = columns.findIndex((c) => c.key === b.key);
      return originalIndex - targetIndex;
    });
  }, [selectedValues]);

  //加载表格数据
  const fetchList = () => {
    if (!parentId) return;

    setLoading(true);
    repairService
      .getAttachments(parentId)
      .then((res) => {
        setList(res);
      })
      .catch((error) => {
        console.log(error);
        toast.error("获取数据失败！", error);
      })
      .finally(() => {
        setLoading(false);
      });
  };

  // biome-ignore lint/correctness/useExhaustiveDependencies: <explanation>
  useEffect(() => {
    if (parentId) {
      fetchList();
    } else {
      // 初始化时清空状态
      setList([]);
      setSelectedRowKeys([]);
      setTempIds([]);
      setAddList([]);
      setUpdateList([]);
      setDeleteIds([]);
    }
  }, [parentId]);

  //检验是否输入值
  const validatePartsBeforeAdd = (): boolean => {
    for (const detail of list) {
      if (!detail.repairId) {
        toast.error("维修单ID");
        return false;
      }
    }
    return true;
  };

  // 处理上传按钮点击
  const handleUpload = () => {
    validatePartsBeforeAdd();

    setUploadModalVisible(true);
  };

  // 在删除方法中修改判断逻辑
  const handleDelete = () => {
    // 如果没有选中行，直接返回
    if (selectedRowKeys.length === 0) {
      return;
    }

    // 更新删除ID列表
    const newDeleteIds = [...deleteIds];

    // 将已有ID但不在deleteIds中的ID添加到deleteIds
    for (const key of selectedRowKeys) {
      const item = list.find((item) => item.id === key);
      if (item?.id && !tempIds.includes(item.id)) {
        // 如果不在临时ID列表中，则添加到删除列表
        if (!newDeleteIds.includes(item.id)) {
          newDeleteIds.push(item.id);
        }
      }
    }

    // 更新deleteIds状态
    setDeleteIds(newDeleteIds);

    // 删除没有提交到后台的文件
    const deleteFileIds = tempIds.filter((id) => selectedRowKeys.includes(id))
    const deleteFileUrls = list
			.filter((item) => deleteFileIds.includes(item.id))
			.map((item) => item.fileUrl);
    deleteFileUrls.forEach((url) => {
      repairService.deleteFile(url).then(() => {
        toast.success("文件删除成功");
      }).catch((error) => {
        toast.error(`文件删除失败: ${error.message || "未知错误"}`);
      });
    })

    // 从列表中移除选中的行
    setList((prevList) =>
      prevList.filter((item) => !selectedRowKeys.includes(item.id))
    );
    // 从tempIds中移除被删除的临时ID
    setTempIds((prevTempIds) =>
      prevTempIds.filter((id) => !selectedRowKeys.includes(id))
    );
    // 清空选中状态
    setSelectedRowKeys([]);
  };

  // 处理上传模态窗关闭
  const handleUploadModalCancel = () => {
    setUploadModalVisible(false);
    setFileList([]);
  };

  // 处理文件上传
  const handleFileUpload = async () => {
    if (fileList.length === 0) {
      toast.warning("请选择要上传的文件");
      return;
    }

    setUploading(true);

    console.log("上传文件", fileList);
    // 上传每个文件
    for (const file of fileList) {
      if (file.originFileObj) {
        // 使用修改后的uploadFile方法
        await repairService
          .uploadFile(file.originFileObj)
          .then((res) => {
            toast.success("文件上传成功");
            setUploadModalVisible(false);
            const filePath = res;

            const newId = Date.now().toString();
            const newDetail: EamEquipmentRepairAttachment = {
              id: newId,
              repairId: parentId,
              fileUrl: filePath,
              fileName: file.name,
              fileType: file.type,
              fileSize: file.size
            };

            // 添加到临时ID列表
            setTempIds((prev) => [...prev, newId]);
            setList((prev) => [...prev, newDetail]);
          })
          .catch((error) => {
            toast.error(`上传失败: ${error.message || "未知错误"}`);
          })
          .finally(() => {
            setUploading(false);
          });
      }
    }
  };

  // 处理文件列表变化
  const handleFileListChange: UploadProps["onChange"] = ({
    fileList: newFileList,
  }) => {
    setFileList(newFileList);
  };

  // 上传前检查
  const beforeUpload = (file: File) => {
    // 这里可以添加文件类型、大小等检查
    const isLt10M = file.size / 1024 / 1024 < 10;
    if (!isLt10M) {
      toast.error("文件必须小于10MB!");
      return false;
    }
    return true;
  };

  return (
    <>
      <div className="flex justify-between mb-4">
        <div className="flex gap-2">
          <Button type="primary" onClick={handleUpload} disabled={isView}>
            上传
          </Button>
          <Button
            danger
            disabled={selectedRowKeys.length === 0 || isView}
            onClick={handleDelete}
          >
            删除
          </Button>
        </div>
        <TableToolbar
          onRefresh={() => fetchList()}
          onSizeChange={setTableSize}
          columns={columns}
          selectedValues={selectedValues}
          onColumnChange={setSelectedValues}
        />
      </div>
      <Table
        rowKey="id"
        size={tableSize}
        scroll={{ x: "max-content", y: tableScrollY }}
        loading={loading}
        pagination={false}
        columns={filteredColumns}
        dataSource={list}
        rowSelection={{
          type: "checkbox",
          selectedRowKeys: selectedRowKeys,
          onChange: (selectedKeys) => {
            setSelectedRowKeys(selectedKeys as React.Key[]);
          },
        }}
      />

      {/* 上传文件模态窗 */}
      <Modal
        title="上传文件"
        open={uploadModalVisible}
        onCancel={handleUploadModalCancel}
        footer={[
          <Button key="cancel" onClick={handleUploadModalCancel}>
            取消
          </Button>,
          <Button
            key="upload"
            type="primary"
            loading={uploading}
            onClick={handleFileUpload}
          >
            上传
          </Button>,
        ]}
      >
        <Upload
          beforeUpload={beforeUpload}
          onChange={handleFileListChange}
          fileList={fileList}
          multiple={false}
          thumbnail={false}
        />
        <div className="mt-4 text-gray-500">单个文件大小不超过10MB</div>
      </Modal>
    </>
  );
});

export default EamEquipmentRepairAttachmentPage;
